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Table 1 Contributing studies (n = 16)

From: Estimating prevalence of subjective cognitive decline in and across international cohort studies of aging: a COSMIC study

Study

Abbreviation

Country

Country income group*

Baseline (years)

Sample size

Atma Jaya Cognitive & Aging Research

ActiveAging

Indonesia

LMIC

2009

278

Cognitive Function & Ageing Studies

CFAS

UK

HIC

1989–1991

12,457

Einstein Aging Study

EAS

USA

HIC

1993

2154

Epidemiology of Dementia in Central Africa

EPIDEMCA

Republic of Congo, Central African Republic

LIC/LMIC

2011–2012

1867

Etude Santé Psychologique et Traitement

ESPRIT

France

HIC

1999–2001

2190

Invecchiamento Cerebrale in Abbiategrasso

Invece.Ab

Italy

HIC

2010

1280

Korean Longitudinal Study on Cognitive Aging and Dementia

KLOSCAD

Korea

HIC

2009–2012

6430

Leipzig Longitudinal Study of the Aged

LEILA75+

Germany

HIC

1997

1045

Long-term Research Grant Scheme - Towards Useful Aging

LRGS-TUA

Malaysia

UMIC

2012–2013

2131

Maastricht Aging Study

MAAS

Netherlands

HIC

1993

500

Monongahela Valley Independent Elders Survey

MoVIES

USA

HIC

1987–1989

1276

Personality and Total Health Through Life Project

PATH

Australia

HIC

2001

1965

Sasaguri Genkimon Study

SGS

Japan

HIC

2011

2618

Singapore Longitudinal Ageing Studies II

SLASII

Singapore

HIC

2003

2585

Sydney Memory and Ageing Study

SydneyMAS

Australia

HIC

2005–2007

1037

Zaragoza Dementia Depression Project

ZARADEMP

Spain

HIC

1994

4415

  1. HIC high-income country, LIC low-income country, LMIC lower-middle income country, UMIC upper-middle income country
  2. *According to World Bank classification at year/mean year of baseline assessment